Shoe tree



FIG. 1 is a perspective view of a shoe tree showing my new design;

FIG. 2 is a front elevational view;

FIG. 3 is a rear elevational view;

FIG. 4 is a top plan view;

FIG. 5 is a left side elevational view, the right side being a mirror image; and,

FIG. 6 is a top plan view. 

The ornamental design for a shoe tree, as shown and described. 